Insecticide.



K E sin 1 ROBERT E. WATSON, ALVA, FLORIDA.

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Flo Drawing.

To all whom it may concern:

Be itknown that I, ROBERT E. WATSON,

a citizen of the United States, residing at- Alva, in the county of Lee and State of Florida, have invented certain new and use-- fullmprovements in Insecticides, of which the following is a specification. This invention has for its object to provide an insecticide in the form of a powder which is highly eflicient in destroying insects infesting fruit trees, and more particularly orange, grapefruit and other citrus trees. The insecticide is composed of the follow- The lime'should air slaked and hydrated,

' and thetpbacco dust may be ordinary 'snuflf. p The Paris green and arsenate of'lead should be powdered-.-

The several ingredients named are thoroughly mixed to produce a fine powder which is sprayed or'dusted' on the'trees to be treated.

Lime and sulfur are well known insecticides and their use in the present compound gives body to the same, and with the tobacco, arsenate of lead and Paris green,

form a compound which is highly effective Y Specification of Letters'latent.

Application filed July 3, 1913. Serial No.,777,222.

" Patented Oct. 19; 1915.

for the destruction of insects infesting citrus trees.

The compound is applied to the trees'by using an ordinary dry powder spraying apparatus, audit is applied very early in the morning while the trees are heavily ladenwith dew. The powder is spread overthe trees and settles on the'leaves, branches and fruit wet with dew, and when it comes in contact with the moisture, it forms a solu-.

- tion which remains until .it is washed off by a heavy rain. The solution completely covers the fruit and leaves. and quickly exterminates the insects, and as the wings of the insects are still damp from the dew, they are sod unable to fly sufiiciently to make their escape as is the case when a liquid spray is used.

. ,The (:OmDOlllld can'be easily and quickly applied an ticide and a preventive of other insects it makes a highly eflicient insecbreeding on. the trees. I

I'clairn:

v An insecticide in powdered form capable ."of having certain of its ingredients combine in the presence of water and including acetoarsenate of copper, arsenate of lead, 'and slaked lime,.said ingredients when in solution combining to form,'in'addition to the primary ingredients, acetate of lime, arsenper "and lead.-

in' presence of twowitnesses ROBERT E. WATSON.

Witnesses: T Eoom LAMB,

H. H TUSSEY. I

gasv

etc of copper and a double arsenate of c0p- Intestimony whereof I afiiXsigna ture 

